| 开口空腔内湍流自然对流与表面辐射的耦合传热 |
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| 引用本文： | 林成先,辛明道.开口空腔内湍流自然对流与表面辐射的耦合传热[J].重庆大学学报(自然科学版),1991,14(6):1-7. |
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| 作者姓名： | 林成先 辛明道 |
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| 作者单位： | 重庆大学工程热物理研究所，重庆大学工程热物理研究所，重庆大学工程热物理研究所 博士研究生 |
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| 摘 要： | 对具有单个加热壁的二维方形开口空腔内的湍流自然对流与表面辐射的耦合传热进行了数值研究。结果表明,辐射强烈地影响腔内的流场及温度场,它既可增强也可减弱空腔的湍流自然对流换热;不同Rayleigh数和温差比下,空腔的总换热率及辐射所占份额均呈现不同的变化规律。
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| 关 键 词： | 表面辐射 传热 自然对流 湍流 |
COMBINED HEAT TRANSFER OF TURBULENT NATURAL CONVECTION AND SURFACE RADIATION IN AN OPEN CAVITY |
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| Lin Chengxian Xin Mingdao Zhang Hongji.COMBINED HEAT TRANSFER OF TURBULENT NATURAL CONVECTION AND SURFACE RADIATION IN AN OPEN CAVITY[J].Journal of Chongqing University(Natural Science Edition),1991,14(6):1-7. |
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| Authors: | Lin Chengxian Xin Mingdao Zhang Hongji |
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| Institution: | Lin Chengxian Xin Mingdao Zhang Hongji |
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| Abstract: | A numerical study is carried out for the combined heat transfer of turbulent natural convection and surface radiation in an two-dimensional open square cavity with only one heated wall. The results show that the radiation significantly affects the velocity and temperature fields,and it can reduce the turbulent natural convection heat transfer as well as enhance it. For different Rayleigh number and temperature difference ratio,the overall heat transfer rates and the portion of radiation present different variation patterns. |
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| Keywords: | surface radiation natural convection open cavity turbulent flow finite difference method |
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